/*
 *  Hamlib JRC backend - main file
 *  Copyright (c) 2001-2010 by Stephane Fillod
 *
 *
 *   This library is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *   Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>  /* String function definitions */
#include <unistd.h>  /* UNIX standard function definitions */
#include <math.h>

#include "hamlib/rig.h"
#include "serial.h"
#include "misc.h"
#include "cal.h"
#include "register.h"

#include "jrc.h"


/*
 * Carriage return
 */
#define EOM "\r"

#define BUFSZ 32

/*
 * modes in use by the "2G" command
 */
#define MD_RTTY	'0'
#define MD_CW	'1'
#define MD_USB	'2'
#define MD_LSB	'3'
#define MD_AM	'4'
#define MD_FM 	'5'
#define MD_AMS	'6'
#define MD_FAX	'6'
#define MD_ECSS_USB	'7'
#define MD_ECSS_LSB	'8'
#define MD_WFM	'9'


/*
 * jrc_transaction
 * We assume that rig!=NULL, rig->state!= NULL, data!=NULL, data_len!=NULL
 * Otherwise, you'll get a nice seg fault. You've been warned!
 * TODO: error case handling
 */
static int jrc_transaction(RIG *rig, const char *cmd, int cmd_len, char *data, int *data_len)
{
	int retval;
	struct rig_state *rs;

	rs = &rig->state;

	serial_flush(&rs->rigport);

	Hold_Decode(rig);

	retval = write_block(&rs->rigport, cmd, cmd_len);
	if (retval != RIG_OK) {
		Unhold_Decode(rig);
		return retval;
	}

	if (!data || !data_len) {
		Unhold_Decode(rig);
		return 0;
	}

	retval = read_string(&rs->rigport, data, BUFSZ, EOM, strlen(EOM));

	Unhold_Decode(rig);

	if (retval < 0)
		return retval;
	*data_len = retval;

	return RIG_OK;
}

static int jrc2rig_mode(RIG *rig, char jmode, char jwidth,
			rmode_t *mode, pbwidth_t *width)
{
	switch (jmode) {
	case MD_RTTY:	*mode = RIG_MODE_RTTY; break;
	case MD_CW:	*mode = RIG_MODE_CW; break;
	case MD_USB:	*mode = RIG_MODE_USB; break;
	case MD_LSB:	*mode = RIG_MODE_LSB; break;
	case MD_AM:	*mode = RIG_MODE_AM; break;
	case MD_FM:	*mode = RIG_MODE_FM; break;
	case MD_AMS:	if (rig->caps->rig_model == RIG_MODEL_NRD535) {
				*mode = RIG_MODE_FAX;
			} else {
				*mode = RIG_MODE_AMS;
			}
			break;
	case MD_ECSS_USB:	*mode = RIG_MODE_ECSSUSB; break;
	case MD_ECSS_LSB:	*mode = RIG_MODE_ECSSLSB; break;
	case MD_WFM:		*mode = RIG_MODE_WFM; break;
	default:
	  rig_debug(RIG_DEBUG_ERR,
		    "%s: unsupported mode %c\n",
		    __FUNCTION__, jmode);
	  *mode = RIG_MODE_NONE;
	  return -RIG_EINVAL;
	}

	/*
	 * determine passband
	 */
	switch (jwidth) {
	case '0':
	  *width = s_Hz(6000); //wide
	  break;
	case '1':
	  *width = s_Hz(2000); //inter
	  break;
	case '2':
	  *width = s_Hz(1000); //narr
	  break;
	case '3':
	  *width = s_Hz(12000); //aux - nrd535 only
	  break;
	default:
	  rig_debug(RIG_DEBUG_ERR,
		    "%s: unsupported width %c\n",
		    __FUNCTION__, jwidth);
	  *width = RIG_PASSBAND_NORMAL;
	  return -RIG_EINVAL;
	}

	return RIG_OK;
}

static int rig2jrc_mode(RIG *rig, rmode_t mode, pbwidth_t width,
		char *jmode, char *jwidth)
{
	switch (mode) {
	case RIG_MODE_RTTY:	*jmode = MD_RTTY; break;
	case RIG_MODE_CW:       *jmode = MD_CW; break;
	case RIG_MODE_USB:      *jmode = MD_USB; break;
	case RIG_MODE_LSB:      *jmode = MD_LSB; break;
	case RIG_MODE_AM:       *jmode = MD_AM; break;
	case RIG_MODE_FM:       *jmode = MD_FM; break;
	case RIG_MODE_AMS:	*jmode = MD_AMS; break;
	case RIG_MODE_FAX:	*jmode = MD_FAX; break;
	case RIG_MODE_ECSSUSB:	*jmode = MD_ECSS_USB; break;
	case RIG_MODE_ECSSLSB:	*jmode = MD_ECSS_LSB; break;
	case RIG_MODE_WFM:	*jmode = MD_WFM; break;
	default:
	  rig_debug(RIG_DEBUG_ERR,
		    "%s: unsupported mode %d\n", __FUNCTION__, mode);
	  return -RIG_EINVAL;
	}

	if (width == RIG_PASSBAND_NORMAL)
		width = rig_passband_normal(rig, mode);

	if (width <= s_Hz(1500))
	  *jwidth = '2'; /*narr*/
	else if (width <= s_Hz(4000))
	  *jwidth = '1'; /*inter*/
	else if (width <= s_Hz(9000))
	  *jwidth = '0'; /*wide*/
	else if (rig->caps->rig_model == RIG_MODEL_NRD535)
	  *jwidth = '3'; /*aux - nrd535 only*/
	else
	  *jwidth = '1'; /*inter*/

	return RIG_OK;
}


int jrc_open(RIG *rig)
{
  int retval;

  /*
   * Turning computer control ON,
   * Turn continuous mode on (for "I" query)
   */

  if (rig->caps->rig_model == RIG_MODEL_NRD535)
    retval = jrc_transaction(rig, "H1" EOM, 3, NULL, NULL);
  else
    retval = jrc_transaction(rig, "H1" EOM "I1"EOM, 6, NULL, NULL);

  return retval;
}

int jrc_close(RIG *rig)
{
  int retval;

  /* Turning computer control OFF */

  retval = jrc_transaction(rig, "H0" EOM, 3, NULL, NULL);
  return retval;
}


/*
 * jrc_set_freq
 * Assumes rig!=NULL
 */
int jrc_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	char freqbuf[BUFSZ];
	int freq_len;

	if (freq >= (freq_t)pow(10, priv->max_freq_len))
	  return -RIG_EINVAL;

	freq_len = sprintf(freqbuf, "F%0*"PRIll EOM, priv->max_freq_len, (int64_t)freq);

	return jrc_transaction (rig, freqbuf, freq_len, NULL, NULL);
}

static int get_current_istate(RIG *rig, char *buf, int *buf_len)
{
	int retval;

	/*
	 * JRCs use "I" to get information,
	 */
	if (rig->caps->rig_model == RIG_MODEL_NRD535)
	  retval = jrc_transaction (rig, "I1" EOM "I0" EOM, 6, buf, buf_len);
	else
	  retval = jrc_transaction (rig, "I" EOM, 2, buf, buf_len);

	return retval;
}

/*
 * jrc_get_freq
 * Assumes rig!=NULL, freq!=NULL
 */
int jrc_get_freq(RIG *rig, vfo_t vfo, freq_t *freq)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	int freq_len, retval;
	char freqbuf[BUFSZ];

	//note: JRCs use "I" to get information
	retval = get_current_istate(rig, freqbuf, &freq_len);
	if (retval != RIG_OK)
	  return retval;

	//I command returns Iabdffffffffg<CR>
	if (freqbuf[0] != 'I' || freq_len != priv->info_len) {
	  rig_debug(RIG_DEBUG_ERR,"jrc_get_freq: wrong answer %s, "
		    "len=%d\n", freqbuf, freq_len);
	  return -RIG_ERJCTED;
	}
	freqbuf[4+priv->max_freq_len] = '\0';

	/* extract freq */
	sscanf(freqbuf+4, "%"SCNfreq, freq);

	return RIG_OK;
}

/*
 * jrc_set_vfo
 * Assumes rig!=NULL
 */
int jrc_set_vfo(RIG *rig, vfo_t vfo)
{
	unsigned char cmdbuf[16];
	int cmd_len, retval;
	char vfo_function;

	switch (vfo) {
	case RIG_VFO_VFO: vfo_function = 'F'; break;
	case RIG_VFO_MEM: vfo_function = 'C'; break;
	default:
		rig_debug(RIG_DEBUG_ERR,"jrc_set_vfo: unsupported VFO %d\n",
							vfo);
		return -RIG_EINVAL;
	}

	cmd_len = sprintf((char *) cmdbuf, "%c" EOM, vfo_function);

	retval = jrc_transaction (rig, (char *) cmdbuf, cmd_len, NULL, NULL);

	return retval;
}


/*
 * jrc_set_mode
 * Assumes rig!=NULL
 */
int jrc_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
{
	char mdbuf[BUFSZ];
	int retval, mdbuf_len;
	char amode, awidth;

	retval = rig2jrc_mode(rig, mode, width, &amode, &awidth);
	if (retval != RIG_OK)
	  return retval;

	mdbuf_len = sprintf(mdbuf, "D" "%c" EOM, amode);
	retval = jrc_transaction (rig, mdbuf, mdbuf_len, NULL, NULL);
	if (retval != RIG_OK)
	  return retval;

	mdbuf_len = sprintf(mdbuf, "B" "%c" EOM, awidth);
	retval = jrc_transaction (rig, mdbuf, mdbuf_len, NULL, NULL);
	if (retval != RIG_OK)
	  return retval;

	return RIG_OK;
}

/*
 * jrc_get_mode
 * Assumes rig!=NULL, mode!=NULL, width!=NULL
 */
int jrc_get_mode(RIG *rig, vfo_t vfo, rmode_t *mode, pbwidth_t *width)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	int md_len, retval;
	char mdbuf[BUFSZ];
	char cmode;
	char cwidth;

	//note: JRCs use "I" to get information
	retval = get_current_istate(rig, mdbuf, &md_len);
	if (retval != RIG_OK)
	  return retval;

	//I command returns Iabdffffffffg<CR>
	if (mdbuf[0] != 'I' || md_len != priv->info_len) {
	  rig_debug(RIG_DEBUG_ERR,"jrc_get_mode: wrong answer %s, "
		    "len=%d\n", mdbuf, md_len);
	  return -RIG_ERJCTED;
	}

	/* extract width and mode */
	cwidth = mdbuf[2];
	cmode = mdbuf[3];

	retval = jrc2rig_mode(rig, cmode, cwidth,
			mode, width);

	return retval;
}

/*
 * jrc_set_func
 * Assumes rig!=NULL
 */
int jrc_set_func(RIG *rig, vfo_t vfo, setting_t func, int status)
{
	int cmd_len;
	char cmdbuf[BUFSZ];

	/* Optimize:
	 *   sort the switch cases with the most frequent first
	 */
	switch (func) {
	case RIG_FUNC_FAGC:
			/* FIXME: FAGC levels */
		cmd_len = sprintf(cmdbuf, "G%d" EOM, status?1:2);

		return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_FUNC_NB:
		/* FIXME: NB1 and NB2 */
		cmd_len = sprintf(cmdbuf, "N%d" EOM, status?1:0);

		return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

		/*
		 * FIXME: which BB mode for NR and BC at same time ?
		 */
	case RIG_FUNC_NR:
		cmd_len = sprintf(cmdbuf, "BB%d" EOM, status?1:0);

		return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_FUNC_BC:
		cmd_len = sprintf(cmdbuf, "BB%d" EOM, status?2:0);

		return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_FUNC_LOCK:
		cmd_len = sprintf(cmdbuf, "DD%d" EOM, status?1:0);

		return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_FUNC_MN:
		cmd_len = sprintf(cmdbuf, "EE%d" EOM, status?1:0);

		return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	default:
		rig_debug(RIG_DEBUG_ERR,"Unsupported set_func %d\n", func);
		return -RIG_EINVAL;
	}

	return RIG_OK;
}


/*
 * jrc_get_func
 * Assumes rig!=NULL, status!=NULL
 */
int jrc_get_func(RIG *rig, vfo_t vfo, setting_t func, int *status)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	int retval, func_len;
	char funcbuf[BUFSZ];

	/* Optimize:
	 *   sort the switch cases with the most frequent first
	 */
	switch (func) {
	case RIG_FUNC_FAGC:
	  /* FIXME: FAGC levels */
	  //retval = jrc_transaction (rig, "G" EOM, 2, funcbuf, &func_len);
	  retval = get_current_istate(rig, funcbuf, &func_len);
	  if (retval != RIG_OK)
	    return retval;

	  //if (func_len != 3 || func_len != 6) {
	if (funcbuf[0] != 'I' || func_len != priv->info_len) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_func: wrong answer %s, "
		      "len=%d\n", funcbuf, func_len);
	    return -RIG_ERJCTED;
	  }
	  //*status = funcbuf[1] != '2';
	  *status = funcbuf[4+priv->max_freq_len] != '2';

	  return RIG_OK;

	case RIG_FUNC_NB:
		/* FIXME: NB1 and NB2 */
		retval = jrc_transaction (rig, "N" EOM, 2, funcbuf, &func_len);
		if (retval != RIG_OK)
			return retval;

		if (func_len != 3) {
			rig_debug(RIG_DEBUG_ERR,"jrc_get_func: wrong answer %s, "
						"len=%d\n", funcbuf, func_len);
			return -RIG_ERJCTED;
		}
		*status = funcbuf[1] != '0';

		return RIG_OK;

		/*
		 * FIXME: which BB mode for NR and BC at same time ?
		 */
	case RIG_FUNC_NR:
		retval = jrc_transaction (rig, "BB" EOM, 3, funcbuf, &func_len);
		if (retval != RIG_OK)
			return retval;

		if (func_len != 3) {
			rig_debug(RIG_DEBUG_ERR,"jrc_get_func: wrong answer %s, "
						"len=%d\n", funcbuf, func_len);
			return -RIG_ERJCTED;
		}
		*status = funcbuf[2] == '1';

		return RIG_OK;

	case RIG_FUNC_BC:
		retval = jrc_transaction (rig, "BB" EOM, 3, funcbuf, &func_len);
		if (retval != RIG_OK)
			return retval;

		if (func_len != 3) {
			rig_debug(RIG_DEBUG_ERR,"jrc_get_func: wrong answer %s, "
						"len=%d\n", funcbuf, func_len);
			return -RIG_ERJCTED;
		}
		*status = funcbuf[2] == '2';

		return RIG_OK;

	case RIG_FUNC_LOCK:
		retval = jrc_transaction (rig, "DD" EOM, 3, funcbuf, &func_len);
		if (retval != RIG_OK)
			return retval;

		if (func_len != 3) {
			rig_debug(RIG_DEBUG_ERR,"jrc_get_func: wrong answer %s, "
						"len=%d\n", funcbuf, func_len);
			return -RIG_ERJCTED;
		}
		*status = funcbuf[1] == '1';

		return RIG_OK;

	case RIG_FUNC_MN:
		retval = jrc_transaction (rig, "EE" EOM, 3, funcbuf, &func_len);
		if (retval != RIG_OK)
			return retval;

		if (func_len != 3) {
			rig_debug(RIG_DEBUG_ERR,"jrc_get_func: wrong answer %s, "
						"len=%d\n", funcbuf, func_len);
			return -RIG_ERJCTED;
		}
		*status = funcbuf[1] == '1';

		return RIG_OK;

	default:
		rig_debug(RIG_DEBUG_ERR,"Unsupported get_func %d\n", func);
		return -RIG_EINVAL;
	}

	return RIG_OK;
}

/*
 * jrc_set_level
 * Assumes rig!=NULL
 * FIXME: cannot support PREAMP and ATT both at same time (make sens though)
 */
int jrc_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	int cmd_len;
	char cmdbuf[BUFSZ];

	/* Optimize:
	 *   sort the switch cases with the most frequent first
	 */
	switch (level) {
	case RIG_LEVEL_ATT:
	  cmd_len = sprintf(cmdbuf, "A%d" EOM, val.i?1:0);

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_LEVEL_RF:
	  cmd_len = sprintf(cmdbuf, "HH%03d" EOM, (int)(val.f*255.0));

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_LEVEL_AF:
	  cmd_len = sprintf(cmdbuf, "JJ%03d" EOM, (int)(val.f*255.0));

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_LEVEL_SQL:
	  cmd_len = sprintf(cmdbuf, "LL%03d" EOM, (int)(val.f*255.0));

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_LEVEL_NR:
	  cmd_len = sprintf(cmdbuf, "FF%03d" EOM, (int)(val.f*255.0));

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

#if 0
	case RIG_LEVEL_TONE:
	  cmd_len = sprintf(cmdbuf, "KK%03d" EOM, (int)(val.f*255.0));

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);
#endif

	case RIG_LEVEL_NOTCHF:
	  cmd_len = sprintf(cmdbuf, "GG%+04d" EOM, val.i);

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

#if 0
	  case RIG_LEVEL_BWC:
	  if (priv->pbs_len == 3)
		  val.i /= 10;

	  cmd_len = sprintf(cmdbuf, "W%0*d" EOM, priv->pbs_len,  val.i);

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);
#endif

	case RIG_LEVEL_AGC:
	  if (val.i < 10)
	  	cmd_len = sprintf(cmdbuf, "G%d" EOM,
			  val.i == RIG_AGC_SLOW ? 0 :
			  val.i == RIG_AGC_FAST ? 1 : 2);
	  else
	  	cmd_len = sprintf(cmdbuf, "G3%03d" EOM, val.i/20);

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_LEVEL_CWPITCH:
	  cmd_len = sprintf(cmdbuf, "%s%+05d" EOM, priv->cw_pitch, val.i);

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_LEVEL_IF:
	  if (priv->pbs_len == 3)
		  val.i /= 10;

	  cmd_len = sprintf(cmdbuf, "P%+0*d" EOM, priv->pbs_len+1, val.i);

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	default:
	  rig_debug(RIG_DEBUG_ERR,"Unsupported set_level %d\n", level);
	  return -RIG_EINVAL;
	}

	return RIG_OK;
}


/*
 * jrc_get_level
 * Assumes rig!=NULL, val!=NULL
 */
int jrc_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	int retval, lvl_len, lvl;
	char lvlbuf[BUFSZ];
	char cwbuf[BUFSZ];
	int cw_len;

	switch (level) {
	case RIG_LEVEL_RAWSTR:
	  /* read A/D converted value */
	  retval = jrc_transaction (rig, "M" EOM, 2, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != 5) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  lvlbuf[4] = '\0';
	  val->i = atoi(lvlbuf+1);
	  break;

	case RIG_LEVEL_STRENGTH:
	  /* read calibrated A/D converted value */
	  retval = jrc_transaction (rig, "M" EOM, 2, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != 5) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  lvlbuf[4] = '\0';
	  val->i = (int)rig_raw2val(atoi(lvlbuf+1), &rig->caps->str_cal);
	  break;

	case RIG_LEVEL_ATT:
	  retval = get_current_istate(rig, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvlbuf[0] != 'I' || lvl_len != priv->info_len) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  val->i = lvlbuf[1] == '1' ? 20 : 0;
	  break;

	case RIG_LEVEL_AGC:
	  retval = get_current_istate(rig, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvlbuf[0] != 'I' || lvl_len != priv->info_len) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  lvlbuf[priv->info_len-1] = '\0';

	  if (priv->info_len==14) {
	    switch (lvlbuf[priv->info_len-2]){
	    case '0' : val->i = RIG_AGC_SLOW; break;
	    case '1' : val->i = RIG_AGC_FAST; break;
	    case '2' : val->i = RIG_AGC_OFF; break;
	    default : val->i = RIG_AGC_FAST;
	    }
	  }
	  else {
	    val->i = atoi(lvlbuf+priv->info_len-4);
	  }
	  break;

	case RIG_LEVEL_RF:
	  retval = jrc_transaction (rig, "HH" EOM, 3, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != 6) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }
	  /*
	   * 000..255
	   */
	  sscanf(lvlbuf+2, "%u", &lvl);
	  val->f = (float)lvl/255.0;
	  break;

	case RIG_LEVEL_AF:
	  retval = jrc_transaction (rig, "JJ" EOM, 3, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != 6) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }
	  /*
	   * 000..255
	   */
	  sscanf(lvlbuf+2, "%u", &lvl);
	  val->f = (float)lvl/255.0;
	  break;

	case RIG_LEVEL_SQL:
	  retval = jrc_transaction (rig, "LL" EOM, 3, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != 6) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }
	  /*
	   * 000..255
	   */
	  sscanf(lvlbuf+2, "%u", &lvl);
	  val->f = (float)lvl/255.0;
	  break;

	case RIG_LEVEL_NR:
	  retval = jrc_transaction (rig, "FF" EOM, 3, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != 6) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }
	  /*
	   * 000..255
	   */
	  sscanf(lvlbuf+2, "%u", &lvl);
	  val->f = (float)lvl/255.0;
	  break;

#if 0
	case RIG_LEVEL_TONE:
	  retval = jrc_transaction (rig, "KK" EOM, 3, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != 6) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  sscanf(lvlbuf+2, "%u", &lvl);
	  val->f = (float)lvl/255.0;
	  break;
#endif

	case RIG_LEVEL_NOTCHF:
	  retval = jrc_transaction (rig, "GG" EOM, 3, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != 8) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }
	  /*
	   * 000..255
	   */
	  sscanf(lvlbuf+2, "%d", &lvl);
	  val->f = (float)lvl/255.0;
	  break;

#if 0
	  case RIG_LEVEL_BWC:
	  retval = jrc_transaction (rig, "W" EOM, 2, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvlbuf[0] != 'W' || lvl_len != priv->pbs_len+2) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  sscanf(lvlbuf+1, "%d", &lvl);
	  if (priv->pbs_len == 3)
		  lvl *= 10;

	  val->i = lvl;
	  break;
#endif

	case RIG_LEVEL_CWPITCH:
	  cw_len = sprintf(cwbuf, "%s" EOM, priv->cw_pitch);

	  retval = jrc_transaction (rig, cwbuf, cw_len, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != cw_len+5) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  sscanf(lvlbuf+(cw_len-1), "%05d", &lvl);
	  val->i = lvl;
	  break;

	case RIG_LEVEL_IF:
	  retval = jrc_transaction (rig, "P" EOM, 2, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvlbuf[0] != 'P' || lvl_len != priv->pbs_info_len) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_level: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  sscanf(lvlbuf+1, "%d", &lvl);
	  if (priv->pbs_len == 3)
	    lvl *= 10;

	  val->i = lvl;
	  break;

	default:
	  rig_debug(RIG_DEBUG_ERR,"Unsupported get_level %d\n", level);
	  return -RIG_EINVAL;
	}

	return RIG_OK;
}

/*
 * jrc_set_parm
 * Assumes rig!=NULL
 * FIXME: cannot support PREAMP and ATT both at same time (make sens though)
 */
int jrc_set_parm(RIG *rig, setting_t parm, value_t val)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	int cmd_len;
	char cmdbuf[BUFSZ];
	int minutes;

	/* Optimize:
	 *   sort the switch cases with the most frequent first
	 */
	switch (parm) {
	case RIG_PARM_BACKLIGHT:
		cmd_len = sprintf(cmdbuf, "AA%d" EOM, val.f>0.5?0:1);

		return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_PARM_BEEP:

	  cmd_len = sprintf(cmdbuf, "U%0*d" EOM, priv->beep_len, priv->beep + val.i?1:0);

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	case RIG_PARM_TIME:
	  minutes = val.i/60;
	  cmd_len = sprintf(cmdbuf, "R1%02d%02d" EOM,
			    minutes/60, minutes%60);

	  return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);

	default:
	  rig_debug(RIG_DEBUG_ERR,"Unsupported set_parm %d\n", parm);
	  return -RIG_EINVAL;
	}

	return RIG_OK;
}

/*
 * jrc_get_parm
 * Assumes rig!=NULL, val!=NULL
 */
int jrc_get_parm(RIG *rig, setting_t parm, value_t *val)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
                int retval, lvl_len, i;
	char lvlbuf[BUFSZ];
	char cmdbuf[BUFSZ];
	int cmd_len;

	/* Optimize:
	 *   sort the switch cases with the most frequent first
	 */
	switch (parm) {
	case RIG_PARM_TIME:
	  retval = jrc_transaction (rig, "R0" EOM, 3, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  /* "Rhhmmss"CR */
	  if (lvl_len != 8) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_parm: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  /* convert ASCII to numeric 0..9 */
	  for (i=1; i<7; i++) {
	    lvlbuf[i] -= '0';
	  }
	  val->i = ((10*lvlbuf[1] + lvlbuf[2])*60 +	/* hours */
		     10*lvlbuf[3] + lvlbuf[4])*60 +	/* minutes */
	             10*lvlbuf[5] + lvlbuf[6];	/* secondes */
	  break;

	case RIG_PARM_BEEP:
	  cmd_len = sprintf(cmdbuf, "U%d" EOM, priv->beep/10);
	  retval = jrc_transaction (rig, cmdbuf, cmd_len, lvlbuf, &lvl_len);
	  if (retval != RIG_OK)
	    return retval;

	  if (lvl_len != priv->beep_len+2) {
	    rig_debug(RIG_DEBUG_ERR,"jrc_get_parm: wrong answer"
		      "len=%d\n", lvl_len);
	    return -RIG_ERJCTED;
	  }

	  val->i = lvlbuf[priv->beep_len] == 0 ? 0 : 1;
	  break;

	default:
	  rig_debug(RIG_DEBUG_ERR,"Unsupported get_parm %d\n", parm);
	  return -RIG_EINVAL;
	}

	return RIG_OK;
}

/*
 * jrc_get_dcd
 * Assumes rig!=NULL, dcd!=NULL
 */
int jrc_get_dcd(RIG *rig, vfo_t vfo, dcd_t *dcd)
{
	char dcdbuf[BUFSZ];
	int dcd_len, retval;

	retval = jrc_transaction (rig, "Q" EOM, 2, dcdbuf, &dcd_len);
	if (retval != RIG_OK)
		return retval;

	if (dcd_len != 3) {
		rig_debug(RIG_DEBUG_ERR,"jrc_get_dcd: wrong answer %s, "
						"len=%d\n", dcdbuf, dcd_len);
		return -RIG_ERJCTED;
	}
	*dcd = dcdbuf[1] == '0' ? RIG_DCD_ON : RIG_DCD_OFF;

	return RIG_OK;
}

/*
 * jrc_set_trn
 * Assumes rig!=NULL
 */
int jrc_set_trn(RIG *rig, int trn)
{
	char *trncmd;

	/* transceive(continuous) mode not available in remote mode
	 * so switch back and forth upon entering/leaving
	 */
	trncmd = trn==RIG_TRN_RIG ? "H0"EOM"I1"EOM : "H1"EOM"I1"EOM;

	return jrc_transaction (rig, trncmd, 6, NULL, NULL);
}

/*
 * jrc_set_powerstat
 * Assumes rig!=NULL
 */
int jrc_set_powerstat(RIG *rig, powerstat_t status)
{
	char pwrbuf[BUFSZ];
	int pwr_len;

	pwr_len = sprintf(pwrbuf, "T%d" EOM, status==RIG_POWER_ON?1:0);

	return jrc_transaction (rig, pwrbuf, pwr_len, NULL, NULL);
}

/*
 * jrc_get_powerstat
 * Assumes rig!=NULL
 */
int jrc_get_powerstat(RIG *rig, powerstat_t *status)
{
	char pwrbuf[BUFSZ];
	int pwr_len, retval;

	if (rig->caps->rig_model == RIG_MODEL_NRD535) {
		retval = jrc_transaction (rig, "T" EOM, 2, pwrbuf, &pwr_len);
		if (retval != RIG_OK)
		  return retval;

		if (pwr_len != 3) {
		  rig_debug(RIG_DEBUG_ERR,"jrc_get_powerstat: wrong answer %s, "
			    "len=%d\n", pwrbuf, pwr_len);
		  return -RIG_ERJCTED;
		}
		*status = pwrbuf[1] == '0' ? RIG_POWER_OFF : RIG_POWER_ON;

		return RIG_OK;
	}
	else {
		retval = jrc_transaction (rig, "I" EOM, 2, pwrbuf, &pwr_len);

		*status = retval != RIG_OK ? RIG_POWER_OFF : RIG_POWER_ON;

		return retval;
	}

}

/*
 * jrc_reset
 * Assumes rig!=NULL
 */
int jrc_reset(RIG *rig, reset_t reset)
{
	char rstbuf[BUFSZ];
	int rst_len;
	char rst;

	switch(reset) {
		case RIG_RESET_MCALL: rst='1'; break;	/* mem clear */
		case RIG_RESET_VFO: rst='2'; break;		/* user setup default */
		case RIG_RESET_MASTER: rst='3'; break;	/* 1 + 2 */
		default:
			rig_debug(RIG_DEBUG_ERR,"jrc_reset: unsupported reset %d\n",
							reset);
			return -RIG_EINVAL;
	}
	rst_len = sprintf(rstbuf, "Z%c" EOM, rst);

	return jrc_transaction (rig, rstbuf, rst_len, NULL, NULL);
}

/*
 * jrc_set_mem
 * Assumes rig!=NULL
 */
int jrc_set_mem(RIG *rig, vfo_t vfo, int ch)
{
	char cmdbuf[BUFSZ];
	char membuf[BUFSZ];
	int cmd_len, mem_len;

	if (ch < 0 || ch > rig->caps->chan_list[0].end)
	  return -RIG_EINVAL;

	cmd_len = sprintf(cmdbuf, "C%03u" EOM, ch);

	/* don't care about the Automatic reponse from receiver */

	return jrc_transaction (rig, cmdbuf, cmd_len, membuf, &mem_len);
}

/*
 * jrc_get_mem
 * Assumes rig!=NULL
 */
int jrc_get_mem(RIG *rig, vfo_t vfo, int *ch)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	int mem_len, retval;
	char membuf[BUFSZ];
	int chan;

	retval = jrc_transaction (rig, "L" EOM, 2, membuf, &mem_len);
	if (retval != RIG_OK)
	  return retval;

	/* need to handle vacant memories LmmmV<cr>, len = 6 */
	if ((mem_len != priv->mem_len) && (mem_len != 6)) {
	  rig_debug(RIG_DEBUG_ERR,"jrc_get_mem: wrong answer %s, "
		    "len=%d\n", membuf, mem_len);
	  return -RIG_ERJCTED;
	}
	membuf[4] = '\0';

	/*extract current channel*/
	sscanf(membuf+1, "%d", &chan);
	*ch = chan;

	return RIG_OK;
}

/*
 * jrc_set_chan
 * Assumes rig!=NULL
 */
int jrc_set_chan(RIG *rig, const channel_t *chan)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	char	cmdbuf[BUFSZ];
	int	retval, cmd_len;

	sprintf(cmdbuf,"K%03d000",chan->channel_num);

	if (chan->levels[rig_setting2idx(RIG_LEVEL_ATT)].i == 20)
		cmdbuf[4] = '1';

	retval = rig2jrc_mode(rig, chan->mode, chan->width,
			&cmdbuf[6], &cmdbuf[5]);
	if (retval != RIG_OK)
	  return retval;

	sprintf(cmdbuf+7,"%0*"PRIll, priv->max_freq_len, (int64_t)chan->freq);

	if (priv->mem_len==17) {
		switch (chan->levels[rig_setting2idx(RIG_LEVEL_AGC)].i) {
			case RIG_AGC_SLOW : cmdbuf[priv->mem_len-2] = '0'; break;
			case RIG_AGC_FAST : cmdbuf[priv->mem_len-2] = '1'; break;
			case RIG_AGC_OFF  : cmdbuf[priv->mem_len-2] = '2'; break;
			default : cmdbuf[priv->mem_len-2] = '1';
		}
	}
	else {
		sprintf(cmdbuf+priv->mem_len-4,"%03d", chan->levels[rig_setting2idx(RIG_LEVEL_AGC)].i);
	}

	cmd_len = priv->mem_len;
	return jrc_transaction (rig, cmdbuf, cmd_len, NULL, NULL);
}

/*
 * jrc_get_chan
 * Assumes rig!=NULL
 */
int jrc_get_chan(RIG *rig, channel_t *chan)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	char	membuf[BUFSZ], cmdbuf[BUFSZ], freqbuf[BUFSZ];
	int		mem_len, cmd_len, retval;

	chan->vfo = RIG_VFO_MEM;
	chan->ant = RIG_ANT_NONE;
	chan->freq = 0;
	chan->mode = RIG_MODE_NONE;
	chan->width = RIG_PASSBAND_NORMAL;
	chan->tx_freq = 0;
	chan->tx_mode = RIG_MODE_NONE;
	chan->tx_width = RIG_PASSBAND_NORMAL;
	chan->split = RIG_SPLIT_OFF;
	chan->tx_vfo = RIG_VFO_NONE;
	chan->rptr_shift = RIG_RPT_SHIFT_NONE;
	chan->rptr_offs = 0;
	chan->tuning_step = 0;
	chan->rit = 0;
	chan->xit = 0;
	chan->funcs = 0;
	chan->levels[rig_setting2idx(RIG_LEVEL_AGC)].i = RIG_AGC_OFF;
	chan->levels[rig_setting2idx(RIG_LEVEL_ATT)].i = 0;
	chan->ctcss_tone = 0;
	chan->ctcss_sql = 0;
	chan->dcs_code = 0;
	chan->dcs_sql = 0;
	chan->scan_group = 0;
	chan->flags = RIG_CHFLAG_SKIP;
	strcpy(chan->channel_desc, "");

	cmd_len = sprintf(cmdbuf, "L%03d%03d" EOM, chan->channel_num, chan->channel_num);
	retval = jrc_transaction (rig, cmdbuf, cmd_len, membuf, &mem_len);
	if (retval != RIG_OK)
		return retval;

	/* need to handle vacant memories LmmmV<cr>, len = 6 */
	if ((mem_len != priv->mem_len) && (mem_len != 6)) {
		rig_debug(RIG_DEBUG_ERR,"jrc_get_mem: wrong answer %s, "
				    "len=%d\n", membuf, mem_len);
		return -RIG_ERJCTED;
	}

	if (mem_len != 6) {
		if (membuf[4] == '1')
			chan->levels[rig_setting2idx(RIG_LEVEL_ATT)].i = 20;

		jrc2rig_mode(rig, membuf[6], membuf[5],
			&chan->mode, &chan->width);

		strncpy(freqbuf,membuf+7,priv->max_freq_len);
		freqbuf[priv->max_freq_len] = 0x00;
		chan->freq = strtol(freqbuf,NULL, 10);

		if (priv->mem_len==17) {
			switch (membuf[priv->mem_len-2]){
				case '0' : chan->levels[rig_setting2idx(RIG_LEVEL_AGC)].i = RIG_AGC_SLOW; break;
				case '1' : chan->levels[rig_setting2idx(RIG_LEVEL_AGC)].i = RIG_AGC_FAST; break;
				case '2' : chan->levels[rig_setting2idx(RIG_LEVEL_AGC)].i = RIG_AGC_OFF; break;
				default : chan->levels[rig_setting2idx(RIG_LEVEL_AGC)].i = RIG_AGC_FAST;
		    }
		}
		else {
			strncpy(freqbuf,membuf+priv->mem_len-4,3);
			chan->levels[rig_setting2idx(RIG_LEVEL_AGC)].i = strtol(freqbuf,NULL, 10);
		}
	}

	return RIG_OK;
}

/*
 * jrc_vfo_op
 * Assumes rig!=NULL
 */
int jrc_vfo_op(RIG *rig, vfo_t vfo, vfo_op_t op)
{
	const char *cmd;

	switch(op) {
		case RIG_OP_FROM_VFO: cmd="E1" EOM; break;
		case RIG_OP_UP: cmd="MM25" EOM; break;
		case RIG_OP_DOWN: cmd="MM24" EOM; break;
		default:
			rig_debug(RIG_DEBUG_ERR,"jrc_vfo_op: unsupported op %#x\n",
							op);
			return -RIG_EINVAL;
	}

	return jrc_transaction (rig, cmd, strlen(cmd), NULL, NULL);
}


/*
 * jrc_scan, scan operation
 * Assumes rig!=NULL
 *
 * Not really a scan operation so speaking.
 * You just make the rig increment frequency of decrement continuously,
 * depending on the sign of ch.
 * However, using DCD sensing, followed by a stop, you get it.
 */
int jrc_scan(RIG *rig, vfo_t vfo, scan_t scan, int ch)
{
	const char *scan_cmd = "";

	switch(scan) {
		case RIG_SCAN_STOP:
				scan_cmd = "Y0" EOM;
				break;
		case RIG_SCAN_SLCT:
				scan_cmd = ch > 0 ? "Y+" EOM : "Y-" EOM;
				break;
		default:
			rig_debug(RIG_DEBUG_ERR,"Unsupported scan %#x", scan);
			return -RIG_EINVAL;
	}

	return jrc_transaction (rig, scan_cmd, 3, NULL, NULL);
}

/*
 * jrc_decode is called by sa_sigio, when some asynchronous
 * data has been received from the rig
 */
int jrc_decode_event(RIG *rig)
{
	struct jrc_priv_caps *priv = (struct jrc_priv_caps*)rig->caps->priv;
	struct rig_state *rs;
	freq_t freq;
	rmode_t mode;
	pbwidth_t width;
	int count;
	char buf[BUFSZ];

	rig_debug(RIG_DEBUG_VERBOSE, "jrc: jrc_decode called\n");

	rs = &rig->state;

	/* "Iabdfg"CR */
	//#define SETUP_STATUS_LEN 17

	//count = read_string(&rs->rigport, buf, SETUP_STATUS_LEN, "", 0);
	count = read_string(&rs->rigport, buf, priv->info_len, "", 0);
	if (count < 0) {
	  return count;
	}
	buf[31] = '\0';	/* stop run away.. */

	if (buf[0] != 'I') {
	  rig_debug(RIG_DEBUG_WARN, "jrc: unexpected data: %s\n",
		    buf);
	  return -RIG_EPROTO;
	}

	/*
	 * TODO: Attenuator and AGC change notification.
	 */

	if (rig->callbacks.freq_event) {

	  //buf[14] = '\0';	/* side-effect: destroy AGC first digit! */
	  buf[4+priv->max_freq_len] = '\0';	/* side-effect: destroy AGC first digit! */
	  sscanf(buf+4, "%"SCNfreq, &freq);
	  return rig->callbacks.freq_event(rig, RIG_VFO_CURR, freq,
					   rig->callbacks.freq_arg);
	}

	if (rig->callbacks.mode_event) {
	  jrc2rig_mode(rig, buf[3], buf[2], &mode, &width);
	  return rig->callbacks.mode_event(rig, RIG_VFO_CURR, mode, width,
					   rig->callbacks.freq_arg);
	}

	return RIG_OK;
}


/*
 * initrigs_jrc is called by rig_backend_load
 */
DECLARE_INITRIG_BACKEND(jrc)
{
	rig_debug(RIG_DEBUG_VERBOSE, "jrc: _init called\n");

	rig_register(&nrd535_caps);
	rig_register(&nrd545_caps);
	rig_register(&nrd525_caps);

	return RIG_OK;
}

